With cars that have a normal top of the radiator fill cap you can check the water pumps condition rather easily. You simply let the car cool overnight and then open the radiator cap. Start the car and then look in the radiator to see if the fluid is cirrculating. I am not sure how you would determine a water pump failure in our cars though. Is there any way to mount an external temp probe into the colant systme to verify if the car is getting to hot?
If you need to replace the water pump you should have the timming belt and all the tensioners replaced at the same time to avoid doubling your labor costs.
I have one question though. Is changing the thermostat on a Ztech difficult and where can i get the 180 degree thermostat?
